> So is this issue a bug, or should I simply not be doing what I'm doing?
Hi Chris - Certainly what you're trying to do is intended to work - I'll have to do some digging to find out why its not. Thanks for the clear test case, BTW ;) Brian Lloyd [EMAIL PROTECTED] V.P. Engineering 540.361.1716 Zope Corporation http://www.zope.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Chris Faulhaber > Sent: Saturday, January 15, 2005 7:21 PM > To: pythondotnet@python.org > Subject: [Python.NET] Problem when chaining script calls through CLR > classes > > > Hi folks, > > I've run across what I think may be a bug when I chain a script call > through my own application. I'm using 1.0-beta4 on Windows XP with an > installation of Python 2.4. The sequence I use to reproduce the problem > is fairly simple: > 1) Execute some Python code either through PyObject.InvokeMethod, or > PythonEngine.RunSimpleString. > 2) From the executed Python code, call into a CLR class. > 3) From the CLR class, execute Python code again. > > When this happens, I get a NullReferenceException with this stack trace: > at Python.Runtime.Runtime.PyObject_Call(IntPtr pointer, IntPtr args, > IntPtr kw) > at Python.Runtime.PyObject.Invoke(PyObject[] args) > at Python.Runtime.PyObject.InvokeMethod(String name, PyObject[] args) > at <line in my code that made the second call into Python code> > > Here is some example code that demonstrates the issue: > using System; > using Python.Runtime; > > namespace PDNBug { > public class Example { > [STAThread] > static void Main(string[] args) { > PythonEngine.Initialize(); > PythonEngine.RunSimpleString("from CLR.PDNBug import > Example\nExample.FirstCall()"); > } > > public static void FirstCall () { > Console.WriteLine("First call succeeded."); > PythonEngine.RunSimpleString("from CLR.PDNBug import > Example\nExample.SecondCall()"); > } > > public static void SecondCall () { > Console.WriteLine("Second call succeeded."); > } > } > } > > Note that this example uses RunSimpleString to demonstrate the effect, > but the above stack trace came from some more complex code that > primarily uses code objects generated through Python compile(). When > the example code is executed, I receive the following output: > First call succeeded. > Traceback (most recent call last): > File "<string>", line 2, in ? > <CLR.System.NullReferenceException object at 0x02DC6F50>: Object > reference not set to an instance of an object. > > So is this issue a bug, or should I simply not be doing what I'm doing? > > Regards, > Chris Faulhaber > _________________________________________________ > Python.NET mailing list - PythonDotNet@python.org > http://mail.python.org/mailman/listinfo/pythondotnet > _________________________________________________ Python.NET mailing list - PythonDotNet@python.org http://mail.python.org/mailman/listinfo/pythondotnet
